Device for supporting rope-work soled canvas shoes during the sewing of the soles tothe uppers



\ Aug. 28, 1951 c. CARLINO 2,566,166

DEVICE FOR SUPPORTING ROPE-WORK SOLED CANVAS SHOES DURING THE SEWING OF THE SOLES TO THE UPPERS Filed July 27, 1945 2 Sheets-Sheet l Aug. 28, 1951 f, N' 2,566,166

DEVICE FOR SUPPORTING ROPE-WORK SQLED CANVAS'SHQES DURING THE SEWING OF THE SOLES 'TO THE' UPPERS 2 Sheets-Sheet 2 Filed July 27, 1945 ATTORNEY Patented Aug. 28, 1951 DEVICE FOR SUPPORTING ROPE-WORK SOLED CANVAS SHOES DURING THE SEWING OF THE SOLES TO THE UFPERS .Carmelo Carlino, Buenos Aires, Argentina Application July 27, 1945, SerialNo. 607,39

In Argentina January 16, 1945 8 Claims. 1

The present invention relates to a device for the support of the soles of ropework-soled canvas shoes during the operation of sewing the toe and heel of said soles to the corresponding uppers, its main object being a device of the kind specified, capableof being adapted to machines commonly known and used for sewing toe and heel of ropesoled canvas shoes.

With the machines at present in use, it is necessary, in order to sew toe and heel of such canvas-shoe soles, to employ a mold, which complicates the labor involved as, once the sewing is effected, for example, of the uppers with the toe of the sole, it is necessary to disassemble the mold, to which said uppers and sole had been previously adapted, and invert its position in order to sew the corresponding heel.

In order to avoid this difficulty, the novel supporting device of the present invention has been devised. Its main characteristic feature lies in the fact that the upper part, constituting the sole press, is capable of turning round a central vertical shaft, which allows toe and heel of the sole to be placed successively facing punch and needle in order to sew these parts to the corresponding uppers, without it being necessary to effect, therefor, disassembly of any kind.

A further object of the present invention, lies in the factthat the whole assembly of elements forming the supporting device can be made to turn around a second vertical shaft eccentrically situated at a regulatable distance from the former shaft and arranged in such a manner that when said support is made automatically to turn round this eccentric shaft, the stitches forming the toe and heel seam of the shoe converge at common points and may be considered as curvature centers of these parts.

Another object of this invention includes novel hand regulating means in order to be ableto change at will the distance between the press rotating shaft and the support assembly rotating device, thus making it possible to adapt the device to any size of sole.

,The invention includes other advantages and objects that will be more full understood when considering the following description.

In order that the present invention may be more fully understood and put into effect, an example is given inthe form of a preferred embodiment illustrated in the attached drawings, wherein:

Figure 1 is a plan view of the novel supporting device of this invention with the clamping device removed for clarity and full lines and broken lines having been used to indicate the different positions adopted during the several phases of operation. i

Figure 2 is a perspective side view of the same supporting device in one of its operating positions.

Figure 3 is a diagrammatic illustration of the initial position of the device shown in solid lines, that is, the position from which the sewing of the toe of a ropework soled shoe is commenced; and also in dotted lines to show the position after the punch or awl has made its first perforation inthe instant in which the first stitch is to be made.

Figure 4 shows the disc turned 180 in order to effect the sewing of the heel of the shoe, with the sole in its initial heel sewing position.

Figure 5 illustrates the manner in which the thread is introduced into the thickness of the sole, and also how it is secured.

In the figures of the drawing, like numerals refer to like or corresponding parts.

In the embodiment shown, reference I indicates a disc or fiat circular plate, from the lower face of which projects shaft 2,.rotatably adjusted in an adequate opening passing through a second disc or plate 3, also circularly shaped and serving to support the former. If required, the base or bottom face of rotating disc I may be made to penetrate into a circular recess formed in the upper face of disc or lower plate 3, as indicated by the broken lines of Figure 2, serving to guide the first plate during its rotation.

Disc or lower plate 3 in turn is displaceable in the direction of one of its diameters, with respect to a fixed support to which end in the lower face of said disc or plate 3, a trapezial or dove-tailed rib 4 is provided, arranged diametrically with regard to the plate and fitting slideably within guide 5 forming an integral part through the upper portion of a vertical shaft 6 which constitutes the supporting shaft of the whole system. The disc 3, together with its similar disc I, is capable of being moved horizontally within the guide 5. This is due to the fact that the rib 4 is made thinner than the depth of the guide 5. 7

From the figures it can be seen that from the top face of rotating disc I, two small projections or abutments I extend, whose object is to lodge themselves in two coincident cavities formed in the lower face of a plate 8, forming a press or clamp base, whose object is to strongly compress the sole while sewing its toe and heel, the object of said projections 1 being to allow rapid positioning of said plate 8 in its correct operating position.

From th lower part of the slidable disc or plate 3, formerly described, extends a plate 9 confronting a similar plate I6, forming part, in turn, of guide 5 or of its integral elements. The plate 9 carries a screw H rotatably mounted therein, see Figure l. The screw ll threads through adjacent plate l0 so that, by adequately turning said screw II to one side or another the threaded portion of same can be made to act on plate 10 as a consequence of which said plate 9 can be adjusted to increase or diminish the distance separating it from adjacent plate if} and thus in its movement carrying with it slidable disc or plate 3, in this manner varying the distance between supporting shaft 6 and rotating shaft 2, of upper plate I.

From the figures it can be seen furthermore, that on one side of slidable disc or plate 3 is slidably mounted butt or wedge l2, capable of lodging itself in one of two slots or grooves l3 formed in the edge of rotating disc I, and in positions diametrically opposed to one another, allowing the rotation of said disc to be stopped and fixed after each turn within a, 180 angle round shaft 2, see Figure 3.

A clamping device is'mounted above the rotating disc I and cooperates with the plate *8 during the sewing of the toe and heel of the sole to strongly compress the sole. This clamping device includes a plate I4 adjustably connected to a hub [6 by a headed screw The head l5 of the screw is integrally secured as by welding or the like to the top of the plate l4 and the threaded end of the screw I5 is threaded into the hub l6, so as to be turnable in the hub. The hub IS in turn has pressure imparted to its top end through an eccentrically mounted shaft H. For example, the shaft I1 is formed on each end with two eccentric extensions, such as pins i8. These pins 18 extend longitudinally from the shaft ends and are supported within suitable openings formed in the top ends of the two plates l9, which are fixed on the outside portions of two rigid bars or uprights 20. The uprights 20 extend vertically from the top face of the rotating disc I Above mentioned shaft I! forms integral part of lever 2| that can be turned by hand thus bringing about the turning of said shaft around eccentric pins l8 whereby, at a given moment, shaft ll will press against the top of hub i6 which, through screw [5 will cause plat 14 to press in turn against sole 22, it being possible to regulate said pressure at will by adequately screwing or unscrewing screw 15 within said hub IS.

The device just described can be adapted in combination to any type of sewing machine of the kind comprising a punch 23 and a sewing needle 24 forming with said punch an adequate angle, equal to about 22, and wherein said punch and needle ar actuated with an alternating advancing and receding movement, it being possible to obtain said movement by means of any the instant when said punch and needle are out of touch with sole 22, shaft 6 is made to turn within an angle or to a degree also equal to 22,

4 that is, an angle of a turn equal to the angle formed by the axes of movement of the aforementioned units 23 and 24, as shown in Figures 3 and 4.

As is more particularly indicated in Figures 3, 4 and 5 the disc 3, together with its similar disc I are capable of being moved horizontally within guide 5; and the disc I is capable of turning freely on its axis 2, for which purpose it is sufficient to release the wedge l2 in the slot or groove [3, the function of this rotary shifting being to allow the sole 22 to pass from the position indicated in Figure 3 to that shown in Figure 4, and that the discs I and 3 are capable of being moved angularly as regards the axis 6.

As has been shown in Figures 3 and 4, the punch or awl 23, and the needle 24%, are placed at an angle of 22, with respect to the turning axle 6.

Such a condition is based on the following considerations:

When axial movement of the punch or awl 23 is commenced, in a straight line it makes the necessary perforation in the sole 22. After the perforation is made by the awl 23 the needle 24, may introduce in said perforation the thread which has been indicated on Figure 5 under reference a.

It is evident that, in order for the thread to be introduced into said perforation, it will b necessary for it to be face to face with the needle 24, that is to say, for the device to turn at an angle of 22 with respect to axle B, adopting the position indicated by a dotted line in Figure 3.

For the case represented by Figures 3 and 5, the stitches have been shown with imaginary lines, and it will be observed that each one of these stitches forms with its adjacent stitch an angle of 22. Therefore, supposing that five stitches have been sewn, the device will move around the axle '6, starting from the position at coordinates x y, in an angle of 88.

From the detail of Figure 5 it can be observed that the needle 24 and the punch 23 do not pass through the sole from side to side, but only go partially through the sole.

In effect, the point of convergence of the punch 24 and the needle 23 is found to be on an imaginary line which passes through the center of the axle 6, and, therefore, said point is also the convergence point of the successive stitches.

As th thread used is a hempen or similar thread, the different stitches cross one another in the above-mentioned convergence point, thus forming the fastening of the thread.

It must also be borne in mind that the shoe, after the toe and heel have been sewn is passed to another machine for side sewing, that is to say, a machine which effects the sewing as shown by the lines bearing reference I), so much so that these latter stitches help in the fastening. of the former stitches.

The supporting device just described functions in a very simple manner as will now be described.

The toe and heel of the sole 22. to be sewn to the corresponding uppers is previously submitted to a compressing operation in machines ordinarily used for that effect which include plate 8; in these conditions said plate 8, together with sole 22, is dismounted from said compressing machine-and in order to keep the sole at the degree of compression to which it has been submitted, plate 8 isprovided with a series. of projections outlining the shape of said sole, consequently preventing any lateral expansion of same. Under these conditions, on the lateral edge of said sole 22 the corresponding uppers are mounted, after which the assembly thus prepared is "taken to the novel supporting device of the present invention to be sewn, to which end plate 8 is placed upon the upper face of rotating disc I so that projections I of same lodge within the lower cavities ofsaid plate, thus securing the correct placement of the assembly in its operative position, as has been indicated by full lines in Figure 1. In these circumstances, through lever 2| shaft I1 is turned round eccentric pins 18, whereby the central part of said shaft presses against the top end of hub it, which latter part, by means of screw and plate l4, will keep sole 22 strongly pressed against the top face of plate 8.

This done, the mechanism, not shown, which governs the alternative movement of punch 23 and needle 2 3, is put into motion, so that said punch 23, in its advancing movement, as shown by the broken lines in Figure 1, perforates sole 22 to the required depth, after which said punch is made to recede at the same moment in which a ratchet or trigger, not shown, controlling the rotation of shaft 6 willcause said shaft, and consequently discs or plates 3 and I, to turn within an angle also approximately equal to 22, that is to say, the angle formed by punch 23 and needle 24, in the direction shown by the arrow in Figure l, as a consequence of which the perforation formed previously by punch 23 will now face needle 24 which will be able, therefore, to penetrate the orifice without difficulty; simultaneously, punch 23 will again advance, to prepare for the next entry by needle 24. At the moment in which said punch and needle are again brought to their receding positions, a new 22 rotation with regard to shaft 6 of the mobile system will take place, as well as another advance of units 23 and 24, operations which are effected successively until the toe portion has been finished. At such a moment, the electric motor, or similar motor, not shown, governing the different movement, will be made to stop by any of the devices commonly used to that end, such, for example, as a projection adapted to shaft 6, or to an element forming integral part of same, and capable of acting, when corresponding to a certain position of said shaft, on a motor circuit switching device.

Once the sewing of the corresponding toe portion has been finished, trigger I2, which looks the rotation of rotating disc I is pulled outwards, and the entire assembly forming part of said disc is made to turn within a 180 angle round shaft 2, in the direction indicated by the arrows of Figure 1, until sole 22 is placed in the position indicated by the broken lines, with which the heel-portion is the part that now faces punch 23 and needle 24, see Figure 4. Under these circumstances, the same operations that were effected for sewing the corresponding toe portion are now repeated.

This second seam finished, lever 2| is acted upon, causing shaft IT to turn and allowing hub I6 and plate [4 to loosen, thus permitting plate 8 to be withdrawn, together with sole 22 and corresponding uppers, this assembly then to be taken to machines usually employed for the lateral sewing of sole and uppers.

The apparatus just described, may be advantageously adapted to any size footwear. In fact, in cases where soles of a small size are used, such as those indicated by dotted lines in Figure 1, the distance between shafts 2 and 6 must be proportionately varied, to which end, by means of regulating screw ll, rotating disc :I will be made to slide diametrically with respect to-shaft during which movement it will be directed by guides 4 and 5,- until the perforating center of punch 23 and needle 24 coincide with the curvature center of toe and heel of said sole, said degree of displacement being controllable by means of graduatedscale 26, conveniently placed to that effect between the adjacent elements of discs or plates l and 3.

The invention as described can be clearly understood and no further explanations will be required by those versed in the art.

It is evident that changes in build and detail may be introduced without departing from the scope of the invention as clearly set forth in the claims annexed hereto.

1'. A device for supporting canvas shoe ropework soles during the sewing of the toe and heel of said" soles to the corresponding uppers, comprising, a lower disc, slidably mounted on a support forming an integral part of a main vertical shaftsaid shaft rotating said disc, said support being provided with guide means for providing displacement ofsaid disc in the direction of one of its diameters, a second disc rotatably mounted in the lower disc, a clamping device mounted above said second disc adapted to compress the sole against said second disc during the sewing of the toe and the heel to the upper, and means for providing periodical rotation of said discs around the axis of the support shaft.

2. A supporting device for canvas-shoe ropework soles, according to claim 1, characterized by the fact that the means for producing displacement of said lower disc with regard to its support are formed by a screw rotatable in a plate forming an integral part of said lower disc, the stem of which screw is threaded through a second plate adjacent to the former one and forming an integral part of the guide means.

3. A supporting device for canvas-shoe rope- Work soles according to claim 1, characterized by the fact that the clamping device is formed by two arms or uprights, said uprights extending vertically from the top face of the said second rotating disc, an adjustable eccentric shaft in the upper ends of said uprights rotatable manually by means of a lever forming an integral part of the shaft; said eccentric shaft being engageable with the upper face of a hub, a threaded socket in said hub, a screw adjustably threaded into said socket for regulation of the exposed length thereof, and a plate beneath the free end of said screw to compress the sole during the sewing operation.

4. A rotatable support for positioning canvasshoe ropework soles during the sewing of the toe and heel of the soles to the corresponding uppers, comprising a supporting shaft, a disc slidably mounted on said shaft, a second disc rotatably mounted in said first disc, a lower clamp plate mounted on said second disc, said first disc having a dove-tail member mounted in the lower surface thereof, guide means on the top of said shaft adapted to slidably mount said dove-tail member, said second disc having a pair of spaced vertically extending arms from its top surface, an eccentric shaft mounted between the arms, a lever carried by said shaft for rotating the same, an upper clamping plate, and a hub adjustably connected to the top of said upper clamping plate, said hub at its upper end being in contact 7. with said eccentric shaft, whereby a part of said shaft as it is turned presses against the top of said hub to thereby axially move said upper clamping plate into pressing contact against a sole on said lower clamping plate.

5. A supporting device for canvas-shoe ropework soles, according to claim 4, characterized by the fact that the second rotating disc is provided with butts or projections acting in combination with corresponding concavities formed in the lower clamp plate, securing the perfect centralization of the assembly in its operative position.

6. A supporting device for canvas-shoe ropework soles, according to claim 4 characterized by the fact that the second rotating disc is provided with butts or projections acting in combination with corresponding concavities formed in the lower clamping plate, securing the perfect centralization of the assembly in its operative position, means adapted to lock the rotatable position of one of said discs with respect to the other comprising a slidable wedge mounted adjacent said slidable disc and two spaced apart recesses in the periphery of the second rotating disc adapted to receive the said wedge to thereby provide the locking of the said discs.

'7. Means for supporting and clamping canvasshoe ropework soles tobe sewed to uppers at the toe and heel portions, comprising a supporting shaft, a guide carried by said shaft, 2. disc slidably mounted in said guide formed with an opening, a second disc rotatably mounted on said first disc formed with a depending shaft, said shaft extending through the opening in said first disc, sole clamping means carried by said second disc, and means adapted to slide said first disc in said guide to thereby vary the relative positions of the axes of said first shaft and said second-mentioned shaft and variably position a sole clamped by said clamping means, so as to present first the toe and then the heel portion of said sole in line with a punch and needle arrangement while said main shaft is being rotated.

' 8. A supporting device for canvas-shoe ropework soles, according to claim 7, characterized by the fact that the upper rotating disc is provided with means for locking the same against rotation, with regard to the lower slidable disc, in two operative positions placed at 180 one with respect to the other. 7

CARMELO CARLINO.

No references cited. 

